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(No Model.)

J. A. SEYMOUR.

GOVERNOR FOR STEAM ENGINES.

No. 379,131. Patented Mar. 6, 1888.

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UNITED STATES PATENT OFFICE.

JAMES A. SEYMOUR, OF AUBURN, NEW YORK.

GOVERNOR FOR STEAM-ENGINES.

SPECIFICATION forniing part of Letters Patent No. 379,131, dated March 6, 1888.

Application filed May 20, 1887. Serial No. 238.826. (No model.)

, ernors which operate by changingthe position of a cut-off valve, so that it cuts off-the steam from the cylinder at different points in the stroke of the piston, as desired. The means by which this is accomplished are hereinafter described.

In the drawing, A A represent a wheel by the speed of revolution of which the governor is operated, and which turns upon a shaft, B. The shaft B is provided with an ec centric, O, which turns therewith,but whose position in relation thereto is adjustable. The eccentric O operates a cutoff valve by means ofa connecting-rod of ordinary construction,

and by means of the change of position of the eccentric 0 upon the shaft B the point of cutting off the steam is regulated with reference to the pointin thestroke of thepiston at which it is considered desirable to cut off. The rotation of the eccentric 0 upon the shaft B is controlled by means of two springs, D D, secured to opposite points of therim of the wheel A A, and which springs bear, respectively, the weightsE E, secured to their free extremities. Two lugs, g g, secured upon opposite sides of the eccentric C, are severally connected, by means of connecting-rodsff, to the weights E E, or to the springs D D, adjacent to said weights.

The operation is as follows: When the wheel A A is revolved at a uniform rate of speed,

the eccentric maintains one position with referenceto it in its revolution upon the shaft B. Then, if the speed of the wheel A A is increased, the additional centrifugal force imparted to the weights E E tends to move them outward toward the rim of A against the elas ticity of the springs D D thereby rotating the eccentric 0 upon the shaft B through the connecting-rodsff. Upon decreasing the speed of revolution of A A the elasticity of the springs D D brings the weights E E, respectively,nea rer to the center and turns the eccentric G in the reverse direction.

The Weights E E may, if desired, be made hollow, so that additional weight may be added; or their Weight may be diminished by placing in or removing from said cavities, as desired.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is

1. The weights E E, provided with cavities for the reception of additional weights, in combination with the springs D D, to the ends of which they are respectively secured, the other ends of said springs being secured to the rim of the Wheel A.

2. The combination of the wheel A, the two independent leaf-springs D D,'secu red at their ends, respectively, to opposite sides of the rim .of said wheel, the weights E E, secured directl'y to the free ends of the springs D D, respectively, the connecting-rods ff, and eccentric 0.

JAMES A. SEYMOUR.

YVitnesses: FREDERICK I. ALLEN, GEORGE UNDERWOOD. 

